Romantic Nicknames / Pet Names

Paired Nicknames :
Kitty and Princess

this one is specific to my personal case really but you are welcome to spin off it. my ex boyfriend and I called each other these because we volunteer at the humane society together, and Kitty was my favorite cat and Princess was his. And besides, his hair looked like Kitty's fur! black and furry-ish! lol not really furry but you know. It was loverly! Alas, but the beautiful nicknames disappeared with the end of our relationship :(